JP4931783B2 - Organic EL display panel - Google Patents

Organic EL display panel Download PDF

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JP4931783B2
JP4931783B2 JP2007314528A JP2007314528A JP4931783B2 JP 4931783 B2 JP4931783 B2 JP 4931783B2 JP 2007314528 A JP2007314528 A JP 2007314528A JP 2007314528 A JP2007314528 A JP 2007314528A JP 4931783 B2 JP4931783 B2 JP 4931783B2
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electrode
formed
organic el
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JP2008071770A (en
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キム,チャン・ナム
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エルジー エレクトロニクス インコーポレイティド
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/28Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part
    • H01L27/32Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part with components specially adapted for light emission, e.g. flat-panel displays using organic light-emitting diodes [OLED]
    • H01L27/3241Matrix-type displays
    • H01L27/3281Passive matrix displays
    • H01L27/3288Wiring lines
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L51/00Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
    • H01L51/50Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for light emission, e.g. organic light emitting diodes [OLED] or polymer light emitting devices [PLED];
    • H01L51/52Details of devices
    • H01L51/5203Electrodes
    • H01L51/5206Anodes, i.e. with high work-function material
    • H01L51/5212Anodes, i.e. with high work-function material combined with auxiliary electrode, e.g. ITO layer combined with metal lines

Description

  The present invention relates to a display device, and more particularly to a display panel using an organic EL element.

As display devices become larger, flat panel display panels with a small space occupancy have attracted attention.
In particular, recently, research on manufacturing flat display panels using organic EL has been continued.

The organic EL is divided into a passive matrix panel and an active matrix according to the driving method.
In the passive matrix, scan electrode lines and data electrode lines are arranged in a horizontal and vertical form, and pixels are formed in an intersection region between a row direction and a column.

FIG. 1 shows a passive matrix organic EL structure according to the prior art.
Referring to FIG. 1, in the organic EL panel, pixels are formed in a region where a scan electrode and a data electrode intersect. That is, the pixels are formed in a matrix form.
In addition, a scan driver that supplies current to the scan electrode and a data driver that supplies current to the data electrode so that light is emitted from a pixel formed in a region where the scan electrode and the data electrode intersect are provided.

Looking at the process of manufacturing an organic EL panel, a transparent substrate is arranged on the lower side, a first electrode of a transparent electrode is formed on the transparent substrate, an organic layer is formed on the first electrode, A second electrode using a metal compound is formed on the organic layer, and a protective film is formed on the second electrode.
A glass material is used for the transparent substrate. Since the transparent substrate is not conductive, ITO is coated on the transparent substrate to form a transparent electrode having conductivity.
However, since ITO has a high resistance value, a metal auxiliary electrode is often used on a transparent electrode.
Next, a partition is formed, and an organic substance is deposited on the entire surface of the organic EL panel to form an organic substance layer.

In the passive matrix organic EL structure, the higher the resolution, the larger the number of pixels. Accordingly, the number of scan electrode lines and the number of data electrode lines required to form a pixel also increase.
However, as the number of lines of each electrode increases, the time for one pixel to emit light decreases accordingly.

Thus, as the number of lines of each electrode increases, the light emission time per unit time of each pixel is shortened. In order to overcome this, it is necessary to increase the instantaneous luminance accordingly.
There are two general methods for compensating for this, and these are shown in FIGS.
2 and 3 are diagrams showing a passive matrix organic EL structure improved to increase the luminance according to the prior art. These figures are shown rotated by 90 ° from those of FIG. Therefore, the longitudinal direction of the data line is the horizontal direction.
FIG. 2 shows an organic EL structure in which the first electrode strip is divided in half.
As shown in FIG. 2, the first electrode strip is divided into two strips, and each strip is independently driven simultaneously.

As described above, since the number of scans per strip is halved, the light emission time can be lengthened accordingly, and the light emission efficiency and the device life are improved.
However, in the organic EL structure shown in FIG. 2, the data electrodes are divided into left and right sides in the figure, and a data driver for supplying current to the data electrodes must be prepared for all the strips on both sides. Therefore, the problem of cost increase arises.

FIG. 3 shows an organic EL structure in which the first electrode strip is divided in the row direction.
As shown in FIG. 3, the organic EL structure uses the first electrode strip as two lines having a conventional width, and the scan electrode is twice as wide as the interval between the conventional scan electrodes. There is a method of reducing the number of scans in half by forming the size. That is, two pixels are scanned simultaneously.
As shown in FIG. 3, the organic EL structure does not need to further include a data driver for supplying a current to the data electrode even if the number of scans is reduced to half. However, this structure has a problem that the aperture ratio is considerably low because the first electrode line is divided.

  Therefore, the aperture ratio may be increased by further using an auxiliary electrode insulating film in the organic EL structure of FIG. However, this method has a disadvantage that the cost for manufacturing the panel of the organic EL element is increased and the manufacturing efficiency is reduced because a process for forming the insulating film is further required.

  The present invention is intended to solve the above-mentioned problems of the prior art, and an organic EL element panel that can increase the aperture ratio that determines the brightness of the screen without any additional process. It is an object to provide a manufacturing method thereof.

  In order to achieve the above object, the present invention provides an organic EL element having a double scan structure in which pixels are formed in a region where electrodes intersect, a transparent substrate, a first electrode formed on the transparent substrate, An auxiliary electrode formed so as to partially overlap the first electrode while being connected to the first electrode, an organic light emitting layer formed on the first electrode formed corresponding to the pixel, and organic light emission It consists of a 2nd electrode formed so that it may cross | intersect a 1st electrode on a layer, It is characterized by the above-mentioned.

According to the panel of the organic EL element of the present invention and the manufacturing method thereof, the following effects can be obtained.
The aperture ratio is improved by forming a pattern of the first electrode of the transparent electrode in advance to increase the area of the pixel region.
By forming the auxiliary electrode so as to overlap with the first electrode pattern by a predetermined region, the aperture ratio of the organic EL element can be improved by increasing the area of the pixel region by the overlapping region.

In addition, by forming the auxiliary electrode so as to deviate from the first electrode pattern, the area where the upper secondary insulating film covers the pixel can be reduced. As a result, the aperture ratio can be improved only in the portion where the secondary insulating film is displaced.
In addition, the present invention does not require an additional step of forming an insulating film in order to increase the aperture ratio, so there is no increase in cost for manufacturing a panel of an organic EL element, and it is advantageous in terms of manufacturing efficiency.

Prior to describing the present invention, it should be understood that the first electrode may be referred to as an anode or data electrode and the second electrode may be referred to as a cathode or scan electrode.
The following organic EL elements have a double scan structure, and are basically passive matrix organic EL elements in which pixels are formed in a region where the first electrode and the second electrode intersect.
The first electrode is formed on the transparent substrate, and the auxiliary electrode formed on the transparent substrate is formed so as to partially overlap the first electrode. An organic light emitting layer is formed on the first electrode, and a second electrode is formed on the organic light emitting layer so as to intersect the first electrode.
Hereinafter, a panel of an organic EL device according to the present invention and a manufacturing method thereof will be described in detail.

FIG. 4 is a plan view showing an organic EL device having a double scan structure according to the first embodiment of the present invention, and FIGS. 5a to 5c show manufacturing process diagrams taken along the line II 'in FIG.
As shown in FIG. 4, in the organic EL device according to the present invention, pixels are formed in a region where a first electrode 5 and a second electrode (not shown) intersect.
The pixels are arranged in an array in which pixels are arranged independently in a column direction parallel to the arrangement of the first electrodes 5. On the other hand, in the row direction, two pixels are paired in the column direction and arranged in an array.

  A pixel array in which two pixels paired in the column direction are arranged in the row direction is simultaneously scan-driven. That is, in the pixel array arranged in one direction, the odd-numbered pixel (one pixel of the reference array) 3a and the even-numbered pixel (the odd-numbered pair forming a pair with the even-numbered pixel) in the column direction. The pixel 3) is simultaneously scanned.

In the illustrated organic EL element, a pixel array paired in one direction on a transparent substrate 1 is arranged as two lines. As described above, one pixel array is arranged in one direction, and another pixel array is arranged in parallel to the pixel array, and the pixels of both arrays are paired.
The auxiliary electrodes 2a and 2b are formed in a direction perpendicular to the arranged pixel array. At that time, the auxiliary electrodes 2a and 2b are formed as lines on both sides of each pixel of the pixel array. However, one pixel is connected to any one of both lines of the auxiliary electrodes 2a and 2b.

For example, odd-numbered pixels 3a in the column direction are connected to one auxiliary electrode 2a, and even-numbered pixels 3b paired with the odd-numbered pixels 3a are connected to another auxiliary electrode 2b. .
The first electrodes 5 arranged in the row direction are patterned so as to correspond to the even-numbered pixels 3a and the odd-numbered pixels 3b, and are formed so as to be connected to one of the auxiliary electrodes 2a and 2b at the same time.
An organic light emitting layer (not shown) is formed on the first electrode 5, and a second electrode (not shown) is formed on the organic light emitting layer.

In addition, an insulating film 4-2 is formed on the transparent substrate 1 so as to cover the edge portion of the first electrode 5.
The partition walls 6 separating the second electrodes are formed for each pair of pixel arrays arranged in one direction, and the pair of pixel arrays are used as one unit so that both the paired pixels are simultaneously scanned and driven. The two electrodes (not shown) are electrically isolated.
A method of manufacturing the organic EL element shown in FIG. 4 will be described below with reference to FIGS. 5a to 5c.

As shown in FIG. 5 a, first, auxiliary electrodes 2 a and 2 b that form a set of two lines are formed on the transparent substrate 1. The auxiliary electrodes 2a and 2b are formed in the column direction perpendicular to the pixel array arranged in the row direction, and auxiliary electrodes 2a and 2b serving as lines for the respective pixels of the respective pixel pairs in the counter-pixel array are formed.
The first electrode of the odd-numbered pixel 3a in the column direction is connected to one auxiliary electrode 2a, and the first electrode of the even-numbered pixel 3b paired with the odd-numbered pixel 3a is connected to the other auxiliary electrode 2b. Connected.

As shown in FIG. 5b, the first electrode 5 is formed on each pixel so as to be electrically connected to the auxiliary electrodes 2a and 2b. At this time, the first electrode 5 corresponds to a specific pixel, is connected to one auxiliary electrode, and is electrically insulated from the other auxiliary electrode at a predetermined distance (A). Formed. For example, as shown in FIG. 5b, when viewed from the cross section of the odd-numbered pixel array, the auxiliary electrode 2b that is not the auxiliary electrode 2a for driving the odd-numbered pixel 3a is electrically insulated from the other auxiliary electrode 2b. The first electrode 5 is formed with an interval A ′.
Further, as shown in FIG. 5 c, an insulating film 4-2 is formed on the transparent substrate 1 so as to cover the edge portion of the first electrode 5.

Next, in the present invention, a pair of pixel arrays arranged as two lines in one direction on the transparent substrate 1 is connected to an external scan electrode (second electrode) so as to be simultaneously scanned. One partition wall 6 is formed for each pixel array.
That is, one partition wall 6 is formed per pixel array pair. As a result, the second electrodes formed thereafter are electrically isolated in pixel array pair units.
After the partition wall 6 is formed, an organic light emitting layer (not shown) is formed on the first electrode 5.
Finally, after the second electrode (not shown) is formed, the device is completed through passivation and encapsulation for forming a protective film.
Here, one second electrode (not shown) is provided for each pixel array (pixel array pair) in a direction intersecting with the auxiliary electrodes 2a and 2b so that the pixel array pair in which the pixels are paired is simultaneously scanned and driven. ) Are connected.

FIG. 6 is a plan view showing an organic EL device having a double scan structure according to the second embodiment of the present invention, and FIGS. 7A to 7C show manufacturing process diagrams taken along line II-II ′ in FIG.
As shown in FIG. 6, the organic EL element has the same configuration as that of FIG. 4, and the difference from the configuration of FIG. 4 is that the auxiliary electrodes 2a and 2b formed as two lines are each odd-numbered in the column direction. Among the auxiliary electrodes 2a and 2b, an insulating film 4-1 is formed on any auxiliary electrode 2a or auxiliary electrode 2b so that the pixel 3a and the even-numbered pixel 3b are controlled independently. That is, the first electrode is enlarged so as to spread over the other auxiliary electrode that is not driven.
More specifically, as shown in FIGS. 7 a to 7 c, when viewed in the cross section of the odd-numbered pixel array, it is above the other auxiliary electrode 2 b that is not the auxiliary electrode 2 a connected to the first electrode of the odd-numbered pixel 3 a. Then, an insulating film 4-1 is formed.

  As a result, even if the first electrode 5 is formed at a predetermined interval from the insulating film 4-1, or even if the first electrode 5 is partially overlapped with the insulating film 4-1, it is shown in FIG. Thus, even if the first electrode 5 is formed so as to overlap with the insulating film 4-1, the first electrode 5 and the auxiliary electrode 2b are reliably insulated by the formed insulating film 4-1.

Therefore, the first electrode 5 is not formed at a predetermined distance A from the auxiliary electrode 2b so as to be electrically insulated from the adjacent auxiliary electrode 2b without being connected to a specific pixel. May be.
Accordingly, the aperture ratio of the pixel can be increased by expanding the region where the first electrode 5 is formed.
FIGS. 8a to 8c show other steps of manufacturing the organic EL device having the double scan structure of the present invention. FIGS. 9a to 9c are steps of manufacturing the III-III ′ cross section in FIGS. 8a to 8c. FIG.

As shown in FIG. 8c, a pixel array arranged as a pair is formed such that pixels that are paired with each other are simultaneously scanned and driven, and the first electrode portions (5a, 5b, 5c, 5d) Is formed at a pixel connection portion for each pixel array so that every other pixel can be driven. In other words, the first electrode itself is formed as two lines separated in the column direction so that the first electrode portions 5a and 5c are one line and the first electrode portions 5b and 5d are other lines. The In other words, the portions 5a and 5b are formed in a concavo-convex shape, that is, a zigzag line, and the portions 5c and 5d corresponding to the pixels are alternately connected to them (see FIG. 8a).
Auxiliary so as to partially overlap the first electrode portions 5a and 5b on the first electrode portions 5a and 5b formed at the connecting portion to the portion constituting the upper and lower pixels in the drawing of one pixel array pair. Electrodes 2a and 2b are formed.
In addition, an organic light emitting layer (not shown) is formed on the first electrode portions 5c and 5d formed in each pixel so that the paired pixels are simultaneously scan-driven. A second electrode (not shown) is formed on the organic light emitting layer so as to intersect the first electrode.

The first electrode portions 5a and 5b formed as a line at a connection portion to the pixel in one pixel have a concavo-convex shape. That is, the first electrode portion 5a is separated from the electrode portion 5c in a portion that is not a pixel to be driven. As a result, the first electrode portions 5a and 5b formed as lines are uneven and zigzag.
Here, when the first electrode is divided into two in the width direction (row direction), if the first electrode portions 5a and 5b formed at the connection portion to the pixel are formed in a linear stripe pattern, adjacent pixel pairs As the area of the first electrodes 5c and 5d formed corresponding to each pixel is reduced for isolation, the aperture ratio of the pixels 3a and 3b is inferior. However, if the first electrode portions 5a and 5b formed in the connection portion to the pixel for each pixel array as in the present invention are formed in a concavo-convex shape, the first electrode portions 5a and 5b are made to correspond to each pixel in order to isolate adjacent pixel pairs. Thus, the area of the first electrode portions 5c and 5d formed can be increased.

In addition, the auxiliary electrodes 2a and 2b are formed in a concavo-convex shape having a reverse pattern of the first electrode portions 5a and 5b formed as a line for each pixel as a line in the above-described manner. It is formed so as to be partially overlapped with 5b. Accordingly, the area where the secondary insulating film 4-2 covers the pixels can be reduced, and the aperture ratio can be improved.
A secondary insulating film 4-2 is formed on the transparent substrate 1 so as to cover the edge portion of the first electrode 5.
A partition wall 6 is formed for each pixel array pair arranged in one direction, and a second electrode (not shown) is formed with the pixel array pair as one unit so that the paired pixel arrays are simultaneously scanned and driven. Isolate electrically.

As described above, in the present invention, each pixel array is formed by dividing the first electrode into two lines arranged in one direction. However, in another embodiment, the pixel array has two lines or more. It can also be formed separately.
The method for manufacturing the organic EL element configured as described above will be described below.
First, as shown in FIGS. 8 a and 9, first electrode portions 5 a, 5 b, 5 c, 5 d are formed on the transparent substrate 1. More specifically, the first electrode portions 5a and 5b are connected to the pixels 3a and 3b which are paired with each other in the pixel array arranged in pairs, so that the paired pixels 3a and 3b are connected. The first and second electrode portions 5c and 5d are arranged in pairs so that the pixels 3a and 3b forming a pair are simultaneously scanned and driven. Formed on each pixel.

The transparent conductive material is patterned so that the first electrode portions 5a formed as lines control the odd-numbered pixels 3a in the column direction, and the first electrode portions 5b control the even-numbered pixels 3b. To form a first electrode.
The interval a between the formed first electrode patterns and the pattern width b of the first electrode portion 5b depend on process conditions and device characteristics, and therefore there are minimum width and minimum interval, which are usually 10 μm inside and outside. It is.

Further, as shown in FIG. 8b and FIG. 9b, the first electrode portions 5a and 5b are formed such that the connecting portions to the pixels 3a and 3b that form a pair in the pixel array arranged in pairs have an uneven shape. Auxiliary electrodes 2a and 2b are formed thereon.
At this time, the pattern width of the auxiliary electrodes 2a and 2b is formed to be about 1 to 100 μm in consideration of resistance. Further, the auxiliary electrodes 2a and 2b are formed so as to have a concavo-convex shape with respect to the predetermined interval c with respect to the pattern of the first electrode portion 5c formed corresponding to the pixel and the connection portion of the pixels 3a and 3b. The first electrode portions 5a and 5b are formed so as to be shifted so that a portion d partially overlapping with the pattern of the electrode portions 5a and 5b is generated.

The portion “d” that overlaps the interval “c” depends on the alignment tolerance of the apparatus, and is usually 1 to 2 μm, which is much longer than the interval “a” between the first electrode patterns and the pattern width “b” of the first electrode portion. Small.
Next, as shown in FIGS. 8 c and 9 c, a secondary insulating film 4-2 is formed on the transparent substrate 1 so as to cover the edge portion of the first electrode 5.

FIG. 10 is a manufacturing process diagram of an organic EL device having a double scan structure according to the prior art, and it can be seen that the aperture ratio of the pixel is much smaller when compared with FIG. 9c according to the present invention.
In the prior art shown in FIG. 10, the auxiliary electrodes 2a and 2b are formed on the pattern of the first electrode portions 5a and 5b. In the present invention shown in FIG. 9c, the pattern of the first electrode portions 5a and 5b The difference is that the auxiliary electrodes 2a and 2b are formed so as to be displaced.
By forming the auxiliary electrodes 2a and 2b so as to deviate from the first electrode pattern as in the present invention, the area of the secondary insulating film 4-2 covering the pixel is reduced and the secondary insulating film is shifted, thereby improving the aperture ratio. Can be made.

11a and 11b are manufacturing process diagrams of an organic EL device according to the present invention, and FIGS. 12a and 12c are manufacturing process diagrams taken along the line IV-IV ′ in FIGS. 11a and 11b.
As shown in FIG. 11b, in the organic EL device according to the present invention, a large number of pixels are formed in a region where the first electrode 5 and the second electrode (not shown) intersect.
A large number of first electrodes 5 are formed on the transparent substrate 1.
The auxiliary electrode 2 is formed on the transparent substrate 1 so as to partially overlap the first electrode 5 so as to be connected to the formed first electrode 5.

An organic light emitting layer (not shown) is formed on the first electrode 5 formed in each pixel such that the pixels that are paired with each other are simultaneously scanned. Next, a second electrode (not shown) is formed on the organic light emitting layer so as to intersect the first electrode 5.
An insulating film 4-2 is formed on the transparent substrate 1 so as to cover the edge portion of the first electrode 5.
The partition wall 6 is formed for each pixel array pair arranged in one direction, and a second electrode (not shown) is provided in units of the pixel array pair so that both the paired pixels are simultaneously scanned and driven. Isolate electrically.

In the present invention, by forming the auxiliary electrode 2 on the transparent substrate 1 so as to partially overlap with the first electrode 5 pattern, the area of the insulating film 4-2 covering the pixel can be reduced and the aperture ratio can be improved. it can.
The auxiliary electrode material may be a conductive substance, and in particular, Cr, Mo, Al, Cu, alloys thereof, and two or more may be used simultaneously. The auxiliary electrode has a thickness of 0.01 to 10 μm, and the line width can be different depending on the element.

As the material for the insulating film, both inorganic and organic insulating films can be used. For the inorganic insulating film, an oxide insulating film (oxides, SiO2) and a nitride insulating film (nitrides, SiNx) are used.
As the organic insulating film, a polymer (particularly, polyacryl, polyimidefb, novolac, polyphenyl, polystylene) is used. Moreover, the thickness of an insulating film is 0.01-10 micrometers, and the substance with a low light absorbency with respect to visible light is good.
Further, a part of the first electrode in the light emitting region should be covered with an insulating film. That is, the insulating film is formed so as to cover the edge portion of the first electrode where the edge portion is easily damaged during the process in order to prevent a short circuit between the first electrode and the second electrode.
Finally, the first electrode is a transparent electrode, and the second electrode is a metal electrode.

  Although a preferred embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made based on the technical idea of the present invention.

It is a figure which shows the passive matrix organic electroluminescent structure by a prior art. It is a figure which shows the passive matrix organic electroluminescent structure more complemented by the prior art. It is a figure which shows the passive matrix organic electroluminescent structure more complemented by the prior art. It is a top view which shows the organic EL element of the double scan structure by 1st Embodiment of this invention. FIG. 5 is a manufacturing process diagram along I-I ′ section in FIG. 4; It is a top view which shows the organic EL element of the double scan structure by 2nd Embodiment of this invention. FIG. 7 is a manufacturing process diagram taken along the line II-II ′ in FIG. 6. It is another manufacturing process figure of the organic EL element which has a double scan structure of this invention. It is another manufacturing process figure of the organic EL element which has a double scan structure of this invention. It is another manufacturing process figure of the organic EL element which has a double scan structure of this invention. 8A to 8C are manufacturing process diagrams taken along the line III-III '. It is a manufacturing-process figure of the organic EL element which has a double scan structure by a prior art. It is a manufacturing-process figure of the organic EL element by this invention. FIG. 12 is a manufacturing process diagram taken along a line IV-IV ′ in FIG. 11.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Transparent substrate, 2a, 2b ... Auxiliary electrode, 3a ... Odd-numbered pixel, 3b ... Even-numbered pixel, 5 ... 1st electrode, 6 ... Partition.

Claims (7)

  1. A plurality of pixels formed at intersections between a plurality of data electrodes arranged in a row direction and a plurality of scanning electrodes arranged in a column direction, and having two pixels constituting a pair in the column direction; In an organic EL display panel having an organic EL device having a double scan structure for scanning and driving a pixel array arranged in a row direction,
    A transparent substrate (1);
    A first electrode (5) formed on the transparent substrate (1) corresponding to the pixels (3a, 3b);
    A pair of auxiliary electrodes (2a, 2b) composed of a first auxiliary electrode (2a) and a second auxiliary electrode (2b) arranged in parallel to each other in the column direction;
    An organic light emitting layer formed on the first electrode (5) of the pixel (3a, 3b);
    A second electrode formed on the organic light emitting layer,
    The first auxiliary electrode (2a) is covered with an end of the first electrode (5) formed in odd-numbered pixels arranged in the column direction, and is applied to even-numbered pixels arranged in the column direction. The end of the first electrode (5) formed in the odd-numbered pixel is covered with the end of the formed first electrode (5) and is in direct contact with the first auxiliary electrode (2a). The end portion of the first electrode (5) formed in the pixel is electrically insulated from the first auxiliary electrode (2a) by the first insulating film (4-1),
    Pixels of the second auxiliary electrode (2b), together with covered at the end of the first electrode formed in a pixel of the odd numbers arranged in the column direction (5), the even numbers arranged in the column direction The end of the first electrode (5) formed in the odd-numbered pixel is covered with the end of the first electrode (5) formed on the first insulating film (4-1). 2 is electrically insulated from the auxiliary electrode (2b) and the end of the first electrode (5) formed in the even-numbered pixel is in direct contact with the second auxiliary electrode (2b);
    The organic EL display panel, wherein the pair of auxiliary electrodes (2a, 2b) are simultaneously driven so that the odd-numbered pixels and the even-numbered pixels are simultaneously scanned and driven.
  2.   The first auxiliary electrode is electrically connected to a first end of the first electrode formed in odd-numbered pixels arranged in the column direction, and the second auxiliary electrode is arranged in the column direction. The organic EL element panel according to claim 1, wherein the organic EL element panel is electrically connected to a second end portion of the first electrode formed in even-numbered pixels.
  3.   2. The organic EL element panel according to claim 1, wherein the first or second auxiliary electrode is made of at least one of Cr, Mo, Al, and Cu, or one or more alloys thereof.
  4.   2. The organic EL element panel according to claim 1, wherein the first or second auxiliary electrode has a line having a width of 1 to 100 μm.
  5.   The organic EL element panel according to claim 1, wherein the first or second auxiliary electrode has a thickness of 0.01 to 10 μm.
  6.   The organic EL element panel according to claim 1, wherein the insulating film does not overlap a light emitting region of the first electrode.
  7. A plurality of pixels formed at intersections between a plurality of data electrodes arranged in a row direction and a plurality of scanning electrodes arranged in a column direction, and having two pixels constituting a pair in the column direction; In an organic EL display panel having an organic EL device having a double scan structure for scanning and driving a pixel array arranged in a row direction,
    A transparent substrate (1);
    A plurality of first electrodes (5) formed on the transparent substrate (1) corresponding to the pixels (3a, 3b),
    Several first electrodes (5c) are formed in odd-numbered pixels arranged in the column direction and are electrically connected by the first connection line (5a), and the remaining first electrodes (5d) are Formed in even-numbered pixels arranged in the column direction and electrically connected by the second connection line (5b);
    A pair of auxiliary electrodes (2a, 2b) composed of a first auxiliary electrode (2a) and a second auxiliary electrode (2b) arranged in parallel to each other in the column direction;
    A first auxiliary electrode electrically connected to the first connection line (5a);
    A second auxiliary electrode electrically connected to the second connection line (5b);
    An organic light emitting layer formed on the first electrode (5) of the pixel (3a, 3b);
    A second electrode formed on the organic light emitting layer,
    The first auxiliary electrode (2a) overlaps the first connection line (5a) so as to be electrically connected to the first electrode (5) formed in odd-numbered pixels arranged in the column direction. And electrically insulated from the first electrode (5) formed in the even-numbered pixels arranged in the column direction by the insulating film (4-2),
    The second auxiliary electrode (2b) overlaps the second connection line (5b) so as to be electrically connected to the first electrode (5) formed in even-numbered pixels arranged in the column direction. And electrically insulated from the first electrode (5) formed on the odd-numbered pixels arranged in the column direction by the insulating film (4-2),
    The pair of auxiliary electrodes (2a, 2b) are driven simultaneously so that the odd-numbered pixels and the even-numbered pixels are simultaneously scanned and driven ,
    The first connection line 5a and the second connection line 5b have a first zigzag pattern, and the first auxiliary electrode 2a and the second auxiliary electrode 2b have the first zigzag pattern. An organic EL display panel comprising a second zigzag pattern having a bending direction different from that of the pattern .
JP2007314528A 2001-08-21 2007-12-05 Organic EL display panel Active JP4931783B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR2001-50324 2001-08-21
KR20010050324A KR100404204B1 (en) 2001-08-21 2001-08-21 organic electroluminescence device

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CN1416302A (en) 2003-05-07
EP1286397A3 (en) 2006-10-25
CN1207942C (en) 2005-06-22
JP2003077685A (en) 2003-03-14
JP4287104B2 (en) 2009-07-01
US20030038591A1 (en) 2003-02-27
EP1286397A2 (en) 2003-02-26
KR100404204B1 (en) 2003-11-03
JP2008071770A (en) 2008-03-27
US6930448B2 (en) 2005-08-16

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